News tagged with sea urchins
Ever-sharp urchin teeth may yield tools that never need honing
(PhysOrg.com) -- To survive in a tumultuous environment, sea urchins literally eat through stone, using their teeth to carve out nooks where the spiny creatures hide from predators and protect themselves from ...
Dec 22, 2010 |
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Ancient sewer excavation sheds light on the Roman diet
(PhysOrg.com) -- Archaeologists working in a system of connected sewers and drains under the ancient town of Herculaneum in the Bay of Naples area of Italy have analyzed the human excrement found there and ...
Other Sciences / Archaeology & Fossils
Jun 17, 2011 |
4.3 / 5 (17) |
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Echinoderms contribute to global carbon sink
The impact on levels of carbon dioxide in the Earth's atmosphere by the decaying remains of a group of marine creatures that includes starfish and sea urchin has been significantly underestimated.
Jan 08, 2010 |
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Calcium carbonate and climate change
(PhysOrg.com) -- What links sea urchins, limestone and climate change? The common thread is calcium carbonate, one of the most widespread minerals on Earth. UC Davis researchers have now measured the energy changes among ...
Space & Earth / Earth Sciences
Aug 30, 2010 |
3.8 / 5 (9) |
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Abalone are treasured -- nearly to extinction
The authorities popped him near the docks in Port Angeles. On a March afternoon in 1994, a sleek fishing boat -- not-so-subtly named the Abalone Made -- came ashore after puttering around Freshwater Bay. The waiting cops ...
May 13, 2009 |
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Xenacoelomorpha -- a new phylum in the animal kingdom
An international team of scientists including Albert Poustka from the Max Planck Institute for Molecular Genetics in Berlin has discovered that Xenoturbellida and the acoelomorph worms, both simple marine ...
Feb 16, 2011 |
5 / 5 (5) |
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Dental delight! Tooth of sea urchin shows formation of biominerals
(PhysOrg.com) -- Some of the most common minerals in biology, including those in bones and shells, have a mysterious structure: Their crystals are positioned in the same orientation, making them behave as ...
Dec 21, 2009 |
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Urged on by urchins: How sea lilies got their get-up-and-go
Nature abounds with examples of evolutionary arms races. Certain marine snails, for example, evolved thick shells and spines to avoid be eaten, but crabs and fish foiled the snails by developing shell-crushing claws and jaws.
Mar 15, 2010 |
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Researchers reveal remarkable fossil
Researchers from China, Leicester and Oxford have discovered a remarkable fossil which sheds new light on an important group of primitive sea creatures.
Other Sciences / Archaeology & Fossils
Mar 24, 2011 |
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More than 300 new species discovered in the Philippines
This spring, scientists from the California Academy of Sciences braved leeches, lionfish, whip-scorpions and a wide variety of other biting and stinging creatures to lead the most comprehensive scientific ...
Jun 24, 2011 |
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Plant remains link farming to landscape damage in Peru
A study of food remains from ancient settlement sites along the lower Ica valley in Peru, confirms earlier suggestions that farming undermined the natural vegetation so badly that eventually much of the area ...
Space & Earth / Earth Sciences
Aug 15, 2011 |
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Marine reserves mend food chains, link by link
(PhysOrg.com) -- Conservation managers need to take a long-term view when assessing the value of marine protected areas, according to a paper in today’s Proceedings of the National Academy of Sciences of the ...
Feb 23, 2010 |
4.3 / 5 (3) |
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Enigmatic sea urchin structure catalogued
A comprehensive investigation into the axial complex of sea urchins (Echinoidea), an internal structure with unknown function, has shown that within that group of marine invertebrates there exists a struct ...
Jun 09, 2009 |
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Marine Pied Piper leads Nemo astray
The growing amount of human noise pollution in the ocean could lead fish away from good habitat and off to their death, according to new research from a UK-led team working on the Great Barrier Reef.
Aug 03, 2010 |
4 / 5 (3) |
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Sea urchins see with their whole body
Many animals have eyes that are incredibly complex – others manage without. Researchers at the University of Gothenburg have shown that sea urchins see with their entire body despite having no eyes at ...
Jun 30, 2011 |
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